Wall construction



D. J. FLYNN.

WALL CONSTRUCTION APPLICATION map MAY29,1920.

1,405,995. Patented Feb. 7, 1922.

WITNESSES WM AQZ 05/005 JOHN FL YNN.

ATTOBNE Y8 UNITED STATES PATENT OFFICE.

DENNIS ma rLYNN, or NEW BRUNSWICK, NEW JERSEY.

. WALL CONSTRUCTION.

Application med may 29,

To all w from it ma'jconic'em Be it known that I, DENNIS JOHN FLYNN, acitizen of the United States, and a resident of New Brunswick, in thecounty of Middlesex and State'of'Now Jersey, have invented a new andImproved Wall Construction, of which the following is a full, clear, andexact description.

The invention relates to wall construction formed ofouter and inner wallsections with an air space between them, as shown and described, forinstance, in the Letters Patent of the United States, No. 1,329,893,granted to me on February 3, 1920.

The object of the present invention is to provide a new and improvedwallconstruction formed'of hollow building blocks arranged to compensate forany irregularities in the blocks when building the inner and outer wallsections and tying the same together.

Another object is to provide a building block capable for use as'awholein walls, partitions, party walls, and the like, or to be split by themason'for use in forming two opposite building blocks in the spacedouter and inner wall sections.

Another object is to increase thestability of the outer .and inner wallsections by firmly uniting the key or tying blocks by mortar with theopposite blocks of the outer and inner wall sections.

Another object is to 'make provision for the proper admission of stuccoat the outer faces of the wall, plaster at the inner face and mortarbetween adjacent blocks in each course of the outer and inner wallsections.

With these and other objects in view, the invention consists of certainnovel features of construction as hereinafter shown and described andparticularly pointed out in the claims.

A practical embodiment of the invention is represented in theaccompanying drawings forming a part of this specification, in whichsimilar characters of reference indicate corresponding parts in all theviews.

Figure 1 is a plan View of the wall construction;

Figure 2 is a cross section of the same on the line 4-4 of Figure 1;

Figure 3 is a reduced face view. of the same; and a Figure 4 is a planView of a modified form of the building blocks.

The wall of a house or other structure Specification of Letters Patent.

Patented Feb.;7, .1922.

1920. Serial No. 385,238.

isformed of an inner wall section 10 and an outer wall section 11, 'thesections being spaced apart to provide a dead air space 12 between thesaid sections, as plainly shown in Figures 1 and 2. Each of the wallseclow blocks 15 and 16, and alike in construction and have on theirinner sides vertically disposed dovetail grooves 24, 25, preferablylocated at the vertical median lines of the said inner sides. Each ofthe blocks 15 and 16 is preferably provided with three verticallydisposed openings, but for thicker blocks, as shown in Figure 4, anotherrow of openings isadded, but I do not limit myself to the number of suchopenings in any one of the'blocks, but each is preferably made hollow.The two blocks 15 and 16 are setopposite each other in the inner andouter wall sections 10 and 11. It is understood that building blocksmade of plastic material are liable to warp in the process ofmanufacture, and the texture of the building blocks also variesaccording to the different batches of semi-plastic material from whichsuch blocks are made The oppositely disposed blocks 15 and 16 of theinner and outer wall sections 10'and 11 are connected with each other bya key or tying block 30 made of a plastic material and having its sidesprovided with dovetail tongues 31, 32 loosely engaging the correspondingdovetail grooves 24, 25 of the opposite blocks 15 and 16. The dovetailtongues'Sland 32 have their corners 33 tions 10 and 11 is formed ofcourses of holrounded off and each dovetail tongue 31 and 32 is providedat the outer side with a depression or recess 34. In building the walllayers of mortar-35 are placed between the courses and a portion of thismortar passes into the top and bottom ortions of the dovetail grooves24, 25 to fi l the spaces between the inner walls of the said grooves24, 25 and the outer surfaces of the dovetail tongues 31 and 32 tosecurely fasten the key or tying blocks 30 in place and to firmly bindthe blocks 15 and 16 witheach other, at the same time holding theseblocks the de sired distance spaced apart to form the dead air space 12.v Each key or tying block 30 is preferably made hollow, as plainlyindicated in Figure 1, to combine lightness with strength and to permitconvenient handling of the key or tying blocks when building the wall.

By the arrangement described the inner I and outer wall sections can bereadily set up and the opposite building blocks 15 and 16 can be readilyconnected with each other by the use of the key or tying blocks 30,owing to their construction as described, can be readily engaged bytheir dovetail tongues 31, 32 w1th the larger dovetail grooves 24, 25,as above set forth and shown in Figure 1. A wall built in the mannerdescribed is exceedingly strong and durable. In practice, the buildingblocks in one course break joint, with the building blocks in theopposite course and at the same timev the grooves 24, 25 of the buildingblocks in one course are out of register with the grooves 24, 25 of thebuilding blocks in the preceding course (seeFigures 1 and 3), and hencea key or tying block in the registering grooves 24, 25 of the buildingblocks 15, 16 in one course rests at its lower end on the top of thebuilding blocks immediately below the next course, and hence such key ortying block 30 cannot slide downward out of engagement with its grooves24, 25 in the pair of building blocks 15, 16 tied together by such keyor tying block 30.

7 The outer faces of the building blocks 15, 16 are provided withvertically disposed grooves 50, 51, preferably of dovetail shape, andsimilar grooves 52, 53 and 54, 55 are arranged at the sides of theblocks 15, 16. The grooves 50 are adapted to receive plaster while thegrooves 51 receive'stucco, and the registering grooves 52, 53, 54, 55 ofadjacent blocks 15, 15 and 16, 16 in the inner and outer wall sections10 and 11 are adapted to receive a portion of the mortar 35 to firmlyunite the adjacent blocks with each other;

Having thus described my invention, I

claim as new and desire to secure by Letters Patent 1. A wallconstruction, comprlsing inner and outer wall sections spaced apart topro vide a dead air space between them, each section being formed ofhollow building tongue and groove surfaces.

at its sides in dovetail tongues extending in a pa1r of registeringdovetail grooves in a pair of opposite building blocks, the outer sideof each dovetail tongue being provided with a recess, the outer surfaceof each dovetail tongue being spaced from the inner surface of acorresponding dovetail groove and a plastic binding material filling thespace between the said tongue and groove surfaces.

2. A wall construction, comprising inner and outer wall sections spacedapart to provide a dead air space between them,'each section beingformed of hollow building blocks each providedat the center of its innerface with a vertically disposed dovetail groove, of which the dovetailgrooves of the blocks of the inner wall section are in register with thedovetail grooves in the blocks of the outer wall section, and hollowtying blocks, one for each pair of oppositely disposed building blocksof the inner and outer wall sections, each tying block terminating atits sides in dovetail tongues extending in a pair of registeringdovetail grooves in a 7 pair of opposite building blocks, the corners ofeach dovetail tongue being roundedroif and the outer side of eachdovetail tongue being provided with a recess, the outer surface ofv eachdovetail tongue being spaced from the inner surface of a'correspondingdovetail groove, and. a plastic binding material filling the spacebetween the said DENNIS JOHNIFLVYNN.

